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当前位置: 首页 > 文章 > GC-MS测定软包装饮料中光引发剂2-异丙基硫杂蒽酮的残留量 食品工业科技 2010,31 (10) 367-369
Position: Home > Articles > Determination of 2-isopropylthioxanthone residue in packaged beverages by gas chromatography with mass spectrometry detection Science and Technology of Food Industry 2010,31 (10) 367-369

GC-MS测定软包装饮料中光引发剂2-异丙基硫杂蒽酮的残留量

作  者：
张耀海;陈爱华;赵其阳;焦必宁;周志钦
单  位：
西南大学柑桔研究所;西南大学园艺园林学院
关键词：
气相色谱;质谱;光引发剂;2-异丙基硫杂蒽酮;软包装饮料
摘  要：
建立了气相色谱-质谱(GC-MS)检测软包装饮料中2-异丙基硫杂蒽酮(2-ITX)残留量的方法。样品用正己烷振荡提取,提取液用氟罗里硅土固相萃取小柱净化;采用单四极杆质谱进行样品筛选和定量,选取的监测离子为m/z184,224,239,254。本方法的线性范围为0.02～50.0mg/kg,检测限(LOD)为0.005mg/kg,在0.10mg/kg和2.00mg/kg两个添加水平下,平均回收率为105.0%～124.3%(果汁)和125.0%～130.2%(牛奶),相对标准偏差(RSDs)为3.99%～5.00%(果汁)和3.47%～4.26%(牛奶)。该法前处理简单,污染小,重现性良好。
译  名：
Determination of 2-isopropylthioxanthone residue in packaged beverages by gas chromatography with mass spectrometry detection
作  者：
ZHANG Yao-hai1,2,CHEN Ai-hua1,ZHAO Qi-yang1,JIAO Bi-ning1,,ZHOU Zhi-qin2, (1. Citrus Research Institute,Southwest University,Chongqing 400712,China; 2. College of Horticulture and Landscape Architecture,Southwest University,Chongqing 400716,China)
关键词：
gas chromatography(GC);mass spectrometry(MS);photoinitiator;2-isopropylthioxanthone(2-ITX);packaged beverages
摘  要：
A simple method was developed for the trace determination of 2-isopropylthioxanthone(2-ITX)in packaged beverages. Samples were extracted from the food matrix using n-hexane,and further subjected to clean-up and preconcentration using solid-phase extraction prior to analysis by gas chromatography-mass spectrometry. Data was acquired in selective ion monitoring(SIM)mode with the following ions:m/z 184,224,239 and 254 in screening method of GC-MS. The limit of detection(LOD)was 0.005mg/kg. In terms of juice samples,mean recoveries obtained at fortification levels 0.10~2.00mg/kg were in range of 105.0%~124.3% with relative standard deviations(RSDs)from 3.99% to 5.00%. As for milk samples,mean recoveries were in range of 125.0%~130.2% with RSDs from 3.47% to 4.26%. Compared with existing sample treatment,this method was reagent-effective,less toxic and more reproducible.

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